Reading colour image using raster object and getsample() method

Hello all,
I am trying to read a grey image using this code below and it perfectly works:
File filename = new File("myimage.jpg");
BufferedImage inputimage = ImageIO.read(filename);
Raster input = inputimage.getRaster();
double pixelvalue = input.getSample(xx, yy, 0) ; // to read pixel colour.
Now:
what modifications should i do to read a colour image using getsample() method.
any help, by example if y would.
Thanks

The code below
double pixelvalue = input.getSample(xx, yy, 0) ; // to read pixel colour.actually doesn't obtain the pixel color. It reads a band of the specified pixel. If you are reading a tripple band image (24-bit colored image RGB ) then you have to invoke this method three times for band 0, 1 and 2. The arrangment of them depends on the BufferedImage type.
In reply of your question, you can use getSamples method, refer to the java API documentation of the BufferedImage class for more info.
you can also check methods getRGB and setRGB, they used to get/set the entire pixel in range of 0x00000000 to 0x00FFFFFF ( 0x00RRGGBB of image type TYPE_INT_RGB )
Regards,
Mohammed M Saleem

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hey epico
compiles & runs 4 me
see javadocs for SinglePixelPackedSampleModel
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=========
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Text

Well I didn't get any feedback here on this problem. But I
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===============
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Draw to an image using graphics object

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updated code, i cant get starField to be 1200px in height
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class Alpha1 extends Canvas implements Runnable, MouseMotionListener, MouseListener, KeyListener {
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Reading SNMP packet using PL/SQL and XML

Hi,
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regards
Edited by: user10484841 on Sep 24, 2010 3:15 AM

Thank you for the reply!
I have converted oracle MIB into xml using prtg's import tool. As far as I see prtg also uses xml as you can see below.
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no
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<is64bit>
no
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<isunsigned>
no
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<isfloat>
no
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<description>
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vmAbsolute
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sutCustom
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rdbms db info size units
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<multiply>
no
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no
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<is64bit>
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<isunsigned>
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<isfloat>
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no
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regards
Edited by: user10484841 on Oct 19, 2010 6:07 PM
Edited by: user10484841 on Oct 19, 2010 6:07 PM

Problems reading BMP images using ReadImage function

I am trying to load BMP images using the IMAQ Vision ReadImage function (VB6). The images load as monochrome images.
I use the CWIMAQViewer1.Pallette as a parameter in the command.
Note: The images load fine when using Vision Assistant or other image viewing software.
Any ideas?
Thanks!

Sorry. Wrong forum. I'll repost on Machine Vision forum.

How to use an object's paint method

I have created a class imagePanel which extends a jPanel to display an image. When I create a new imagePanel object I pass it an image argument which is used to paint my image on the jPanel, so far so good. I don't wish to have to continuously create new ImamePanels to display new images so I thought I could make a set_Image method that would set a new image in an exising imagePanel object. This is where I run into problems how to use the existing object paint method to replace the image. I tried this without success:
public Image setMyImage (Image myImage)
imageX = myImage; // imageX is the image that is painted by the imagePanel object's paint method
paint(g);
Something must be wrong on how I access the paint method. Thanks for any help.
Jack

Yahoooo, got it. This was the code I needed and thanks for your help:
public void setImage (Image myImage)
imageX = myImage;
repaint(300);
}

When we use call transaction and session method?

cud anyone tell me the exact difference between session and call transaction ? when we have to use ?

hi,
BATCH INPUT METHOD
Asynchronous processing
Transfer data for multiple transactions.
Synchronous database update.
A batch input process log is generated for each session.
Session cannot be generated in parallel.
CALL TRANSACTION METHOD:
Using CALL TRANSACTION USING statement
Faster processing of data
Synchronous processing
Transfer data for a single transaction.
No batch input processing log is generated.

Difference between invoking a method using reflect.proxy and reflect.Method

Could any one tell me the difference between invoking a method using reflection java.lang.reflect.Method and java.lang.reflect.Proxy
using both the class, we can invoke a method at runtime
1)
Method mthd=cl.getMethod("methodName",parameterName);
Integer output=(Integer)mthd.invoke(new RunMthdRef(),input);
2)
Proxy.newProxyInstance(super.getClass().getClassLoader(), new Class[] { adapter }, new SomeClass(this));
Does anybody have any idea?

The two idioms are fundamentally different. Using java.lang.reflect.Method is how we call a method on a class, using Proxy is how we intercept that method call. An exercise for you, to illustrate that they do not do the same thing: write a simple class with one method, then use java.lang.reflect.Method to invoke that method, and then use a Proxy to invoke that method

OLE objects and OO methods - Error using OLE automation

Hi,
I'm developing an class to read/write excel sheets and i'm getting an error on the OLE method that is:
on this instruction
call method of l_obj_excel 'WORKBOOKS' = l_workb_col.
i got a dump that give me the following error UC_OBJECTS_NOT_CONVERTIBLE
The strange is that i've got the same code running on reports and it works fine only when passing it to a oo method i get that dump.
Thzs in advanced to all
Best regards
Jaime

hi check this..
Report ZMULTICOLOR_TEST no standard page heading.
this report demonstrates how to send some ABAP data to an
EXCEL sheet using OLE automation.
include ole2incl.
handles for OLE objects
data: h_excel type ole2_object,        " Excel object
      h_mapl type ole2_object,         " list of workbooks
      h_map type ole2_object,          " workbook
      h_zl type ole2_object,           " cell
      h_f type ole2_object,            " font
      h_c type ole2_object.            " color
DATA: FILENAME LIKE RLGRAP-FILENAME.
tables: spfli.
data h type i.
table of flights
data: it_spfli like spfli occurs 10 with header line.
*&   Event START-OF-SELECTION
start-of-selection.
read flights
select * from spfli into table it_spfli.
display header
uline (61).
write: /     sy-vline no-gap,
          (3) 'Flg'(001) color col_heading no-gap, sy-vline no-gap,
          (4) 'Nr'(002) color col_heading no-gap, sy-vline no-gap,
          (20) 'Von'(003) color col_heading no-gap, sy-vline no-gap,
          (20) 'Nach'(004) color col_heading no-gap, sy-vline no-gap,
          (8) 'Zeit'(005) color col_heading no-gap, sy-vline no-gap.
uline /(61).
display flights
loop at it_spfli.
    write: / sy-vline no-gap,
             it_spfli-carrid color col_key no-gap, sy-vline no-gap,
             it_spfli-connid color col_normal no-gap, sy-vline no-gap,
             it_spfli-cityfrom color col_normal no-gap, sy-vline no-gap,
             it_spfli-cityto color col_normal no-gap, sy-vline no-gap,
             it_spfli-deptime color col_normal no-gap, sy-vline no-gap.
endloop.
uline /(61).
tell user what is going on
call function 'SAPGUI_PROGRESS_INDICATOR'
     exporting
          PERCENTAGE = 0
           text       = text-007
       exceptions
            others     = 1.
start Excel
create object h_excel 'EXCEL.APPLICATION'.
PERFORM ERR_HDL.
set property of h_excel 'Visible' = 1.
CALL METHOD OF H_EXCEL 'FILESAVEAS' EXPORTING #1 = 'c:\kis_excel.xls' .
PERFORM ERR_HDL.
tell user what is going on
call function 'SAPGUI_PROGRESS_INDICATOR'
     exporting
          PERCENTAGE = 0
           text       = text-008
       exceptions
            others     = 1.
get list of workbooks, initially empty
call method of h_excel 'Workbooks' = h_mapl.
perform err_hdl.
add a new workbook
call method of h_mapl 'Add' = h_map.
perform err_hdl.
tell user what is going on
call function 'SAPGUI_PROGRESS_INDICATOR'
     exporting
          PERCENTAGE = 0
           text       = text-009
       exceptions
            others     = 1.
output column headings to active Excel sheet
perform fill_cell using 1 1 1 200 'Carrier id'(001).
perform fill_cell using 1 2 1 200 'Connection id'(002).
perform fill_cell using 1 3 1 200 'City from'(003).
perform fill_cell using 1 4 1 200 'City to'(004).
perform fill_cell using 1 5 1 200 'Dep. Time'(005).
loop at it_spfli.
copy flights to active EXCEL sheet
    h = sy-tabix + 1.
    if it_spfli-carrid cs 'AA'.
      perform fill_cell using h 1 0 000255000 it_spfli-carrid.
    elseif it_spfli-carrid cs 'AZ'.
      perform fill_cell using h 1 0 168000000 it_spfli-carrid.
    elseif it_spfli-carrid cs 'JL'.
      perform fill_cell using h 1 0 168168000 it_spfli-carrid.
    elseif it_spfli-carrid cs 'LH'.
      perform fill_cell using h 1 0 111111111 it_spfli-carrid.
    elseif it_spfli-carrid cs 'SQ'.
      perform fill_cell using h 1 0 100100100 it_spfli-carrid.
    else.
      perform fill_cell using h 1 0 000145000 it_spfli-carrid.
    endif.
    if it_spfli-connid lt 400.
      perform fill_cell using h 2 0 255000255 it_spfli-connid.
    elseif it_spfli-connid lt 800.
      perform fill_cell using h 2 0 077099088 it_spfli-connid.
    else.
      perform fill_cell using h 2 0 246156138 it_spfli-connid.
    endif.
    if it_spfli-cityfrom cp 'S*'.
      perform fill_cell using h 3 0 155155155 it_spfli-cityfrom.
    elseif it_spfli-cityfrom cp 'N*'.
      perform fill_cell using h 3 0 189111222 it_spfli-cityfrom.
    else.
      perform fill_cell using h 3 0 111230222 it_spfli-cityfrom.
    endif.
    if it_spfli-cityto cp 'S*'.
      perform fill_cell using h 4 0 200200200 it_spfli-cityto.
    elseif it_spfli-cityto cp 'N*'.
      perform fill_cell using h 4 0 000111222 it_spfli-cityto.
    else.
      perform fill_cell using h 4 0 130230230 it_spfli-cityto.
    endif.
    if it_spfli-deptime lt '020000'.
      perform fill_cell using h 5 0 145145145 it_spfli-deptime.
    elseif it_spfli-deptime lt '120000' .
      perform fill_cell using h 5 0 015215205 it_spfli-deptime.
    elseif it_spfli-deptime lt '180000' .
      perform fill_cell using h 5 0 000215205 it_spfli-deptime.
    else.
      perform fill_cell using h 5 0 115115105 it_spfli-deptime.
    endif.
endloop.
EXCEL FILENAME
CONCATENATE SY-REPID '_' SY-DATUM6(2) '_' SY-DATUM4(2) '_'
              SY-DATUM(4) '_' SY-UZEIT '.XLS' INTO FILENAME.
CALL METHOD OF H_MAP 'SAVEAS' EXPORTING #1 = FILENAME.
free object h_excel.
perform err_hdl.
      FORM FILL_CELL                                                *
      sets cell at coordinates i,j to value val boldtype bold       *
form fill_cell using i j bold col val.
call method of h_excel 'Cells' = h_zl
    exporting
      #1 = i
      #2 = j.
perform err_hdl.
set property of h_zl 'Value' = val .
perform err_hdl.
get property of h_zl 'Font' = h_f.
perform err_hdl.
set property of h_f 'Bold' = bold .
perform err_hdl.
set property of h_f 'Color' = col.
perform err_hdl.
endform.                    "FILL_CELL
*&      Form ERR_HDL
      outputs OLE error if any                                       *
--> p1        text
<-- p2        text
form err_hdl.
if sy-subrc <> 0.
    write: / 'OLE-Automation Error:'(010), sy-subrc.
    stop.
endif.
endform.                    " ERR_HDL
regards,
venkat

How to generate formated (defined position) text and image using pl/sql and

Hello,
I need to use pl/sql to create a dynamic html page (or image , if possible) with defined positions for text and bar code. It is necessary because the page will be printed and it should be able to be read by one other process , OCR, that needs to have all the data in defined positions.
Any suggestion are welcome.
Thanks in advance,
Emilio

I don't think it's that easy. Notice that if you put the insert into an actual pl/sql block, you don't get the correct column pointer anymore.
BEGIN insert into bob(col1, col2) values (123.12, 12345.12); END;
ERROR at line 1:
ORA-01438: value larger than specified precision allows for this column
ORA-06512: at line 1
Richard

Reading colour image using raster object and getsample() method

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